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arXiv · 1211.2596

Preferred states of the apparatus

Anu Venugopalan
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Abstract

A simple one dimensional model for the system-apparatus interaction is analyzed. The system is a spin-1/2 particle, and its position and momentum degrees constitutes the apparatus. An analysis involving only unitary Schrodinger dynamics illustrates the nature of the correlations established in the system-apparatus entangled state. It is shown that even in the absence of any environment-induced decoherence, or any other measurement model, certain initial states of the apparatus - like localized Gaussian wavepackets - are preferred over others, in terms of the establishment of measurementlike one-to-one correlations in the pure system-apparatus entangled state.

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Anu Venugopalan. 2012-11-12. Preferred states of the apparatus. https://doi.org/10.1007/s12043-011-0224-y

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